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Illinois · Nonprofit

INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP

INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP (Illinois) receives grants from 1 organization whose IRS filings report $0 to it, the largest being OPERATING ENGINEERS NATIONAL CHARITY FUND ($0). 0 of them have funded it in more than one year.

$1.5M
Revenue FY2025
1
Funders on record
$0
Grants received
$9.0M
Net assets
0/1 repeat funderspeak grant-dependency 0%

Against its field

INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP's revenue grew 23% between 2017 and 2025.

Operating margin−19% · bottom quartile
Months of reserve0.3mo · bottom quartile
Revenue growth (annualized)3% · bottom quartile

this organization peer median middle 50% of peers· 1,812 community improvement nonprofits $1M–$10M, FY2025

Three funders worth looking at

Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.

See all 12 prospects and why each one surfaced →
01The organization over time

The organization over time

Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.

100 = 20172017 Revenue 100 ($1.2M) Expenses 100 ($1.8M) Net assets 100 ($11M)2018 Revenue 110 ($1.4M) Expenses 97 ($1.7M) Net assets 97 ($11M)2019 Revenue 115 ($1.4M) Expenses 102 ($1.8M) Net assets 94 ($11M)2020 Revenue 115 ($1.4M) Expenses 109 ($1.9M) Net assets 89 ($10M)2021 Revenue 115 ($1.4M) Expenses 97 ($1.7M) Net assets 87 ($9.7M)2022 Revenue 120 ($1.5M) Expenses 111 ($2.0M) Net assets 82 ($9.3M)2023 Revenue 120 ($1.5M) Expenses 98 ($1.7M) Net assets 80 ($9.0M)2024 Revenue 126 ($1.6M) Expenses 96 ($1.7M) Net assets 82 ($9.3M)2025 Revenue 123 ($1.5M) Expenses 103 ($1.8M) Net assets 80 ($9.0M)
'17'18'19'20'21'22'23'24'25
Revenue (123)Expenses (103)Net assets (80)Peer revenue range

How it's funded, over time

Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.

2017
2018
2019
2020
2021
2022
2023
2024
2025
ContributionsProgram revenueInvestmentOther

0% of INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP’s revenue is contributions — more earned-revenue than three-quarters of its peers (61% for the typical peer).

This organization
Typical peer · 4,406 orgs

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 9 of the last 9 reported years ran a deficit.

−$525k
’17
−$352k
’18
−$369k
’19
−$497k
’20
−$281k
’21
−$473k
’22
−$239k
’23
−$123k
’24
−$296k
’25
0.3
months of
reserve
02Who funds it
03Its place in the field

Funders to approach

Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.

From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.

Organizations like INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP

Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.

In Illinois

International Union of Operating Engineers Local Union No 96584%Int'L Union of Operating Engineers Local 399 Educational Training Fund84%International Union of Operating Engineers Local 399 Health & Welfare Tru81%International Union of Operating Engineers Local #64980%International Union of Operating Engineers 15079%Illinois Realtors79%Operating Engineers Local 150 Apprenticeship Fund78%Operating Engineers Local 520 Joint Apprenticeship and Training Fund76%

Nationally

International Union of Operating Engineers Local Union No 96584%International Union of Operating Engineers Local 484%Int'L Union of Operating Engineers Local 399 Educational Training Fund84%International Union of Operating Engineers Local 9883%International Union of Operating Engineers Local 9483%International Union of Operating Enginee Lcl Un 1515a15b15c15d15g15h Afl-Ci83%International Union of Oper Eng Local 30 Apprentice Train & Skill Improvement Fd83%International Union of Operating Engineers Local No 383%
04Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Governance

8
board members
0%
independent
–Conflict-of-interest policy–Whistleblower policy–Document retention–Board reviewed the 990✓Audited financials

Footprint & structure

Part of a family of 5 related entities

  • Iuoe Local 399 · exempt
  • Iuoe Local 399 Building Corporation II · exempt
  • Iuoe Local 399 Federal PAC · exempt
  • Iuoe Local 399 Political Education Fund · exempt
  • Iuoe Local 399 Staff 401(K) Plan · exempt

Screen this organization

A dated, signed PDF of the compliance screen for INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.

A paid feature, included from the $75 plan up. Sign in to download.

Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. How the screen works · on the API as GET /api/screening/{ein}?format=pdf

Questions and answers

Who funds INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP?
INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP (Illinois) receives grants from 1 organization whose IRS filings report $0 to it, the largest being OPERATING ENGINEERS NATIONAL CHARITY FUND ($0). 0 of them have funded it in more than one year.
How many funders does INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP have?
IRS filings report 1 organization giving $0 in grants to INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP.
Who is the largest funder of INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP?
OPERATING ENGINEERS NATIONAL CHARITY FUND is the largest funder on record, with $0 in grants. The full list of funders is on this page.
How can an organization like INTERNATIONAL UNION OF OPERATING ENGINEERS LOCAL 399 BUILDING CORP find more funders?
Start with the funders already giving here, then look at the foundations that back similar organizations in Illinois. The funding by cause and by state pages list the largest funders for a given area and how to approach them.

These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 1funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported August 27, 2026. What this page cannot tell you · view filing